Dispensing apparatus



Dec- .5, 1933. E. w. DAvls 1,938,174

DISPENSING APPARATUS Filed Feb. 20. 1932 2 Sheets-Sheet4 l 5, 1933? E.w. DAvls I DISPENSING APPARATUS 2 sheets-sheet 2 Filed Feb.' 20, 1932Patented Dec'. 5, 1933 DISPENSING APPARATUS A Ernest w. Davis, oak Park,n1., assignor to Alemite Corporation, Chicago,

Delaware A Application February 20,

10 Claims.

The present invention relates to dispensing apparatus, and isparticularly concerned With dispensing apparatus adapted to be used witha source of air pressure for dispensing lubricant or other liquids fromdrums or other receptacles utilized for storage or shipment of thecommodity.

One of the objects of the invention is the provision of an improvedmethod of dispensing liquids from drums or other containers by means ofcompressed air or the like, which method is not attended by any'dangervon account of the pressures generated in the drum or other container.rThe drums or containers usually employed for shipment or storage oflubricating oil or fuel oils are not capable of withstanding thepressures to which they would be subjected if the usual air line wereconnected directly to the drum to force the liquid out by air pressure.'I'he pressures which would be generated in the drum would probablybreak thev drum and result in serious injury.

Another object of the invention is the provision of an improved deviceadapted to be used for transferring oil from a standard drum to ahighboy-or other receptacle by the use of compressed air in a minimumamount. of time and with absolute safety.

Heretofore this operation has been performed with ay hand pump, whichnecessitated prolonged and strenuous exertion, with frequent periods ofrest, and the time required to empty a drum was well over an hour, orperhaps considerably longer, depending upon the endurance of theoperator.

The present pneumatic transfer is capable of emptying a full sizeddrumin a little over three minutes, with no exertion on the part of theoperator and with very little air consumption.

Another object of theinvention is the provision of a pneumatic liquidtransferring device of the class described, which is adapted to be usedwith compressed air and which is so constructed as to denitely limit thethere will be no dangerot bursting the drum.

Another object of the invention is the provision oi' an improveddispensing apparatus of the class described, which is adapted vto effecta substantially complete discharge of the liquid from ythe container andwhich is adjustable so that it maybe used in containers of differentsizes to effect a complete discharge.

Another object of the invention is the provision of an improveddispensing apparatus of the class described, which is adapted to be usedpressure in :the drum so that 1 Ill., a corporation of 1932. Serial No.594,179 (Cl. 221-'740 for the measurement and dispensing of the liquidin the drum so that the device may be used in the selling of the oil orother liquid' as well as the transfer from one receptaclevto another.

Another obj ect of the invention is the provision 60 of an improveddevice of the class described, which is sturdy, eicient, economical, andcapable of performing its functions for a. long period of time withoutany necessity for repair or adjust-v ment.

Another object of the invention isthe provision of a simplified form ofthe dispensing device which may be so economically manufactured that itmay be placed within the reach of a vast number of users, and may alsobe furnished gratis to a user with the purchase of a predeterminedamount of lubricant or other commodity.

Other objects and advantages of the invention will be apparent from thefollowing description and the accompanying drawings, in which 75 similarcharacters of reference indicate similar l parts throughout the severalviews.

Referring to the drawings, of which there are two sheets,

Fig. 1 is a front elevational view of a drum s@ equipped with one of thesimpler types of dispensing apparatus constructed according to thepresent invention;

Fig. 2 is a fragmentary sectional view with the drum in section and withparts of the apparatus in section on a line determined by the axis ofthe discharge conduit, showing the construction of the y`parts of thedispensing apparatus of Fig.; 1;,

Fig. 3 is a fragmentary view of a portion of a 90 modified form'ofdispensing apparatus utilizing a different form of connection betweenthe conduit and container; l

Fig. 4 is an elevational view of a spring spacer for use on the innerend of the conduit toprevent the conduit from being closed by fiat en-Eagement with the bottom of the container;

Fig. 5 is an enlarged sectional view of the nozzle;

Fig. 6 is an elevational view of another modification, which is thepreferred form of the in-v vention, having an indicator for indicatingthe flow of the liquid and permitting the separation of air bubbles fromthe liquid, yand having a meter n for measuring the amount ofoil orother liquid 05 dispensed bythe device; and

Fig. 7 is a larger fragmentary sectional View, the section being takenon a plane determined by the axis of the discharge conduit, showing thedetails of construction of the device of Fig. 6.

Referring to Figs. 1 to 4, the simpler type of installation preferablyincludes a standard metal drum or. other closed container, a source ofair under pressure connected to the hose 11 and 5 the dispensingapparatus, which is indicated in its entirety by the numeral 12. Thedispensing apparatus 12 preferably includes a flexible conduit 13, whichmay consist of a piece of hose of predetermined length or any flexibletube capable of conveying or transferring the liquid.

In the embodiment of Figs. 1 to 4, the conduit 13 consists of a piece ofspiral metal conduit or tubing packed with asbestos. This tubing has theproperty of flexibility, and to a limited extent is extensible andcapable of being made slightly longer or shorter by pulling or pushingon the condu't. 'The metal conduit 13 is preferably carried by'a fitting14, which is adapted to provide a duid-tight connection between theconduit and the drum 10.

The drums are customarily provided with a threaded aperture 15, which isclosed by a complementary plug. The head 16 of the drum has an aperturebordered by an inwardly extending annular flange 17, which is providedwith a metal fitting 18 having a threaded bore 15. The metal fitting 18is welded to the head of the drum at 19 so as to provide a permanent andfluid-tight joint.

The fitting 14 is provided with an axially extending bore 20 ofsufficient size to receive the flexiblemetal conduit 13. The lower endof the fitting 14'is provided with threads 21 complementary to thethreads of the bore and similar in size to the usual plug for the drum.

The fitting is also provided with a radially extending annular flange22, which is adapted to compress a packing 23 against vthe usual bungfitting 18 in the drum 10. At the upper end of the tting 14 the flexiblemetal conduit 13 is I preferably welded to the fitting 14, as shown at24, to provide a fluid-tight joint at this point. The bore extendingthrough the fitting 14 is preferably located eccentrically with respectto the body of the plug or fitting 14 so as to leave a. space at oneside of the conduit 13 for the aperture or bore 25. The bore 25 providescommunication between the open air outside of the drum and the interior26 of the drum and is utilized with an air jet from nozzle 27 to producea predetermined air pressure in the drum. The bore 25 is preferablyprovided with a tapered portion 28 at its upper end for directing airinto the bore 25 and permitting the more efficient' use of the jet fromnozzle 27.

The metal fitting 14 is preferably provided at one side with a laterallyprojecting portion 29, which is adapted to enclose a conduit leadingfrom the air hose 11 vand to provide a'support for the nozzle 27 andassociated parts. The lug 29 is formed with `a transversely extendingbore 30, the axis of which Ais in substantial alignment with the axis ofthe orifice 25. At its lower end the bore 30 communicates with a smallerbore 31, which is adapted to receive the nozzle 27. The nozzle 27 mayconsist of a metal member preferably constructed of steel and ofsubstantially cylindrical form adapted to fit in the smaller bore 31.The lower end of the cylindrical nozzle 27 is provided with an end wall32 having the opening 33, which may consist of a very llne `1cylindricalbore adapted to discharge a minute jet of air at a high velocity. Forexample, the nozzle orifice 33 may be about 0.025 inches in diameter,being smaller than a. pin hole. The

33- is located substantially on the axis of the aperture in the fitting14 so that it is adapted to discharge the jet of air at a high velocityinto the larger opening, and it will be noted that the nozzle is spacedslightly from the opening 25 and from the frusto-conical portion 28.

The nozzle is preferably provided with a tapered or frusto-conicalportion 34 leading to the nozzle opening 33 and with a substantiallycylindrical bore35 leading to the upper end of the nozzle. The nozzle isalso provided with an annular radially extending` flange 36, which isadapted to be seated upon the annular shoulder 37 at the lower end ofbore 30.

The nozzle is preferably held in place by a l screw plug 38 having anupper threaded portion 39, which is adapted to be threaded into thethreaded portion 40 of bore 30. The plug 38 is preferably provided witha kerf 41 for receiving a screw driver or other tool and at its lowerend it is provided with an axially extending bore 42 which communicateswith the bore 35 in the nozzle. The bore 42 in the plug 38 communicateswith a transverse bore 43 in the plug, the bores 42 and 43 in the plugconstituting a conduit for providing communication between the nozzle 27and the bore 44 which leads to the air line'.

The lower end of the plug 38 is provided with a flat annular surface 45adapted to engage the upper end of the nozzle to secure the nozzle inplace. The plug 38 may also be constructed in other shapes adapted toengage the end of the nozzle 27 and to secure it in place withoutobstructing the ow of air from the bore' .44 to the nozzle.

The laterally projecting lug 29 on the fitting 14 is also provided withan enlarged threaded bore 46 communicating with a smaller bore 47 and atapered aperture 48 leads to the bore 44. Between the bores 46 and 47there is an annular seat 49, against which is placed a fine metal screen50 for protecting the air jet from particles of dirt that may be in thecompressed air. The screen 50 is circular in shape and slightly largerthan the bore 46 so that it may be retained'in the bore 46 against theseat 49 by its engagement with the adjacent threads, the screen beingpushed into place and held there by the threads.

The bore 46 is adapted to receive a reducing fitting 5l. having asmaller threaded bore 52, which is provided with a threaded nipple 53having an axially extending bore 54 and a cylindrical portion 55 forengagement withthe end of a hose. The hose may be secured 'on thecylindrical portion 55 with a standard hose clamp or a removable nipplemay be utilized for engagement with a standard air chuck, but manydifferent forms of air connections may be utilized.

The outer length of conduit 13 may be long enough to reach to anadjacent container, or it may be of considerable length, depending uponthe uses to which the device is to be put. The outer end of the conduitis preferably finished with a metal ring 56 which protects the end ofthe flexible metal conduit and prevents the spiral parts of the conduitfrom being torn apart in use. The inner length 57 of the conduit 13 ispreferably as long as the depth of the deepest drum or receptacle inwhich the device is tobe used, since the conduit should extend to thebottom or lowermost part of the drum. This end of theconduit ispreferably provided with a spring spacer, shown in Figs. 2 and 4, andindicated in its entirety by the numeral v58. The spring spacer 58 mayconsist of a resilient wire having a clr- 150 nozzle orifice the end 60extends in a counterclockwise direction from the axially extendingstraight portion 61, and, if desired, it may be sharpened'so as toengage the inner wall of the conduit.

The circular loop 59 is preferably slightly larger in diameter than thediameter of the spiral "grooves which are formed inside of the fiexiblemetal conduit 13 so that the loop 59 resiliently engages the inside ofthe conduit. The straight portion 61 extends axially ofthe cir- 15 cularloop 59 at one side and is provided with a laterally bent portion 62 anda downwardly extending curved portion 63. The wire spacer may beprovided with a substantially straight bottom porLion 64, a similarcurved portion 65, an inwardly extending portion 66, and an upwardlyextending end 67.

It willbe evident that when the wire spacer 58 is assembled with aflexible metal conduit 13, as shown in Fig. 2, the circular loop 59 maybe threaded into a spiral groove in the conduit, The

trailing end 60 follows the loop without substantial interferenc'e withthe rotation ofthe spring, and the spring may be threaded home to theposition shown in Fig. 2. In this position the end of the conduitengages the outwardly extending portions 62, 66, and the open end 68 ofthe conduit is spaced from the bottom 69 of the drum 10 a distance whichis equal to the distance between the portions 62-66 of the wire and theportion 64 of the Wire. The open end 68 of the conduit can never comeinto fiat engagement with the bottom 69 of the drum to effect a completeclosure, and the end of the conduit is always maintained open so as notto interfere with the 4@ flow of the oil or other liquid into theconduit.

The inner length 57 of the conduit is preferably made long enough toextend to the bottom of a standard drum with which it is intended to beused, and a conduit of this type is naturally resilient and slightlyexensible and contractible so that the wire 58 engages the bottom of thedrum and causes the conduit to contract, if necessary, to adapt i'slength to the depth of the drum.

In smaller or shorter drums, the conduit may also curve after its endhits the bottom so that the length of the conduit is adapted to the drumautomatically when the conduit is placed in the drum. The conduit doesnot curve so readily, however, as to permit the end to curve upward, andthe conduit .is stiff enough to maintain its end at the bottom of thedrum at all times.

It should also be noted that the spring spacer 58 is adapted to bepermanently'retained in the end of the conduit at all times because theloose 60, end 69 of the circular loop 59 tends to frictionally engagethe inside of the conduit in suchmanner that itis difficult to rotatethe spring in a counterclockwise direction. The spring 58 is thus easilythreaded into the conduit, but only removed with difficulty or byintentionally prying the end 60 ofthe spring away from the wall of thetube.`

Referring to Fig. 3, this is a' modification in which the fitting forthe apparatus is adapted to cooperate with a receptacle not'havi'ng a1.40 threaded bore. In this embodiment, the fitting effect a fluid tightwedging engagement with the smooth aperture in the drum. Themodification of Fig. 3 may' be utilized with drums that do not havethreaded bores or with wooden barrels or other receptacles which are notprovided with threaded fittings. It will be evident, therefore, thatvarious forms of fiuid tight connections may be provided between theconduit and the receptacle.

Referring to Figs. 6 and. 7, these figures illus- -trate a modificationwhich is the preferred embodiment of the invention and which includesadditional features over the simpler type of device already described.In this embodiment the dispensing apparatus is also preferably providedwith a length of fiexible metal conduit 76 inside the drum 10. The lowerend of the metal conduit 76 may be provided with av valve fitting 77 ofsubstantially tubular form. The upper cylindrical end 78 of the valvefitting may be secured in the flexible metal conduit 76 by welding,soldering or other convenient fastening means, such as a transverse pin79. The lower end of the tubular valve fitting 77 is provided with aplurality of longitudinally extending slots or apertures 80 adapted topermit the liquid to flow into the valve fitting when the valve fittingengages the bottom 69. In between its ends, the valve fitting 77 isprovided with an inwardly extending annular flange 81, which may beformed with a curved valve seat 82, which is subslantially complementaryto a portion of the ball 83. The ball 83 is adapted to fall into placeagainst the seat 82 by* gravity to close the lower end ofthe conduit 76against back flow of the liquid, but the ball 83 may be lifted by thepressure of the liquid tending to flow upward in the conduit 76 so as topermit fiow in one direction.

The transverse pin 79 is spaced sufficiently from the ball 83 to permitthe ball to rise ofi its seat 115 82, and the pin may extend through theconduit 76 as well as the tting, being provided with a head at one endand being riveted over at the other end. The ball 83 is, of course,slightly smaller than the bore 84 in valve fitting 77 so that the liquidmay fiow about and past the ball when the ball is lifted off the seat82. In some embodiments of the invention a spring may supplement theaction of gravity on the ball 83 in closing the opening 85 which issurrounded by seat 82. v

In this embodiment thecast metal fitting 86 is preferably -provided withan axially extending cylindrical bore 87 for rotatably receiving a metaltube 88, which is connected to the conduit 76 and 130 which supports themeter 89 and indicator 90. The tubular metal member 88 may extend intothe fiexible metal conduit 76 at the lower end of the tube, and theseelements may be secured together by welding or other permanent fastening135 devices. The upper end of the fitting 86 is provided with asubstantially flat seat 91. for engaging a packing 92 of rubber or othersuitable material,.and the. packing 92 may be surrounded by a sheetmetal sleeve 93 having an inwardly 140 extending flange 94 resting onthe top'of the packing. v

The sleeve 93 may telescopically engage a complementary cylindricalportion 95 on the fitting 86 'so that'the Weight of that portion of the145 apparatus carried by the tubular member 88 is brought to bear uponthe packing 9 2. The ypack-- ing 92 is confined between the tube 88,sleeve 93, seating surface 91, and the lower surface of flange 94, andprovides a substantially uid tight rOtt- 15 out oi the indicator it mustgo down into the cup shaped baille 132 and pass into the lower end 146of tube 144. The ow .of the oil or other liquid is thus visible inindicator and the bubbles are brought to the top of the oil underneathcover 121 where they can be released by means of the valve 141 from timeto time. The ball valve 83 prevents the oil from flowing back into thedrum of container 10, and thus prevents the lling of the indicator andother parts of the discharge conduits by a-ir.

a false reading.

The upper tubular end 147 of the cover 121 is provided with threads forreceiving the complementary tapped end 148 of the meter 89.` The liquidflows into the meter at the point 145 and out through the outlet 149,which is connected by appropriate fittings, preferably detachable, tothe hose 96.

The meter 89 may comprise any of a plurality of forms of liquid flowmeters, but it is preferably provided with a dial 150 and a/ rotatingpointer 151 for indicating the amount of liquid dispensed in terms ofliquid measure. The meter is also preferably provided with a counter 152for registering and indicating the total number of quarts or other unitsof liquid dispensed by the apparatus..

The hose 96 is preferably provided with a dispensing nozzle 153 of thetype utilized for dispensinggasoline or oil, havingla handle 154 with avalve 155 and a valve actuating member 156.

The operation of the apparatus described is as follows: 'Ihe tting 14 or86 of the apparatus is secured in the drum or other container either byscrew threads or some other fluid tight connection in such manner thatthe drum or other recep tacle is closed except for the aperture 25,which is in registration with the jet issuing from nozzle 2'?. The innerend of the discharge conduit preferably extends to the lowermost part ofthe drum or receptacle. When the source of air under pressure isconnected by hose 1l to the apparatus 12 the air passes in through theconduits 54, 44, 43, 42, 35 to the nozzle opening 33, and a very ne jetof air under high pressure is expelled from the nozzle 27. 'Ihe jetdischarges into the larger opening 25 and impinges upon the air in theopening 25 to drive the air into the drum l0. The dis charge of airunder high pressure through the jet carries additional atmospheric airwith it and passes down through the opening 25 into the oil drum tocreate a limited pressure in the drum. It has been found that each cubicinch of air discharged through the air nozzle carries along with itapproximately thirty-tive cubic inches cf free The pressure in the drumwill depend upon.

the proportions of the apertures 25 and 33 and the air pressure, andconsequently the pressure in the drum can be predetermined for anyparticular air pressure. There is no danger in applyingthe high airpressure to the present' apparatus for the reason that the drum isalways in communication with the atmosphere through the opening 25 andthe pressure generated in the drum never goes beyond la predeterminedlimit, which may be made relatively low. For example, with the relativeproportions illustrated, a nozzle aperture of 0.025 inches and thelarger oriilce tive thirty-seconds of an inch in diameter, the pressureproduced in the oil drum is three The presence of air might make themeter 89 give and three fourths percent o f the available air pressureapplied to the apparatus through the air hose 11 so that with onehundred. pounds of air pressure in the air line, for example, thepressure in the oil drum would be approximately three and three-quarterspounds. `With one hundred and seventy-five pounds air pressure, which isthe highest pressure recommended, the maximum air pressure in the drumwould be about six and onehalf pounds, or one-tenth of the ultimateburst ing pressure of sixty-five pounds per square inch.

The discharge conduit is preferably made quite large in order'toaccomplish a relatively quick discharge of the oil from the drum with alow pressure in the drum due to increase in the air pressure which iscaused by the jet, and the air carried with the jet is adapted to forcethe liquid out through the conduit 113 in a few minutes.

In the embodiment shown in Figs. 6 and 7, the operation of the device issubstantially the same in principle, except that the liquid also passesthrough the indicator 90 and the meter 89 and at any time the ilow ofthe liquid may be turned oi by means of the valve 155.

The valve 155 is spring actuated and adapted t be closed when the handle156 is released, and when the valve 155 is closed the dispensingapparatus is maintained full of oil or other liquid under pressure,andthe pressure in the drum may be maintained by the nozzle 27 so thatcomplete control may be had by means of the valve 155 for dischargingany measured amount of liquid.

Ordinarily the valve 105 should be turned "oir also during the longintervals between successive dispensing operations, but when the deviceis being used successively to ll different containers or service carsone after another, the valve 105 may be kept in the open position, andthe apparatus may be controlled by the valve 155.

It will thus be observed that I have invented an improved dispensingapparatus which may be f utilized for emptying oil drums or othercontainers by means of compressed air or for dispensing liquid fromdrums or other containers in measured amounts. The present apparatus iseconomical in the consumption of compressed air and empties thecontainer in a small fraction of the time usually required in the use ofcompressed air, according to the methods of the prior art. The pressuregenerated in the drum is kept well within the limits of safety, and theconstruction of the apparatus is such that it is sturdy, economical andcapable of operation for a long period of time Without repair oradjustment.

While I have illustrated and described a preferred embodiment of myinvention, many modiflcations may be made without departing from thespirit of the invention, and I do not Wish to be limited to the precisedetails of construction set forth, but desire to avail myself ofall-changes within the scope of the appended claims.

Having thus described my invention, what I claim is new and desire tosecure by Letters Patent of the United States, is:

1. In a dispensing apparatus the combination of a container with adischarge conduit having a fluid tight connection with the wall of thecontainer and having its inner end immersed in the liquid in saidcontainer, said container having aperture, a removable air nozzle spacedfrom said aperture but in substantial registry therewith and adapted toimpinge upon and entrain air through said aperture into said containerto pro duce a limited pressure in said container and l fix) force theliquid out through said conduit, and an apertured clamping screw. tohold said nozzle in place.

2. In a dispensing apparatus the combination of a container with adischarge conduit having a fluid tight connection with the wall of theconL tainer and having its inner end immersed in the liquid in saidcontainer, said container having an aperture and an air nozzlespacedfrom said aperture but in substantial registry therewith v and adaptedto impinge upon and entrain air through said aperture into saidcontainer to produce a limited pressure in said container and force theliquid out through said conduit, said conduit having a flexible innerportion adapted to extend into the deepest part of said container and tobend to conform to the distance between-said latter part and the wall ofthe container, to effect a full discharge of the liquid, and a springwire spacer secured in the inner end of said conduitu 3. In' adispensing apparatus the combination of a container with a dischargeconduit having a fluid tight connection with the wall of the containerand having its inner end immersed in the liquid in said container, saidcontainer having an aperture,4 an air nozzle spaced from said aperturebut in substantial registry therewith and adapted to'iinpinge upon andentrain air through said aperture into said container to produce alimited pressure in said container and force the liquid out through saidconduit', said conduit having a flexible inner portion adapted to extendinto the deepest part of said container and to bend to conform to thedistance between said latter part and the Wall of the container, toeiect a full discharge of the liquid, and spring wire means carried bythe inner end of said conduit and projecting therefrom to preventclosure of the end of the conduit by engagement with the wall ofthereceptacle.

4;. In a liquid discharging apparatus the combination of a closedcontainer having a threaded bore with a conduit having a iitting withthreads complementary to said threaded bore, said conduit passingthrough said fitting into said container, said tting having an aperture,a nozzle for injecting a jet of gas under pressure into sa'id apertureto force the liquid out through said conduit, a. source of air underpressure connected to vsaid nozzle, and a valve for controlling thesupply of air to said nozzle.

5. In a liquid transfer apparatus, a supporting body provided with anaperture extending through the same, a conduit carried by said body andextending therethrough,'and an air nozzle carried by said body in spacedrelation to ysaid aperture and adapted to project a jet of air underpressure into said aperture to increase the pressure in a receptacle andtorce liquid therefrom through said conduit.

6. In a liquid transfer apparatus, a supporting body provided with anaperture extending through the same, a conduit carried by said body andextending therethrough, and an air nozzle 'said container to theoutside, said conduit com= prising a portion of spiral flexible metallicconduit and a spacer spring comprising a .wire member having a portionformed to space the end ofi said conduit from the container and having acircular loop adapted to be threaded into spiral grooves in said spiralconduit. 8. In an apparatus for dispensing liquid from. drums or thelike, the combination or a supporting fitting adapted to effect a luidtight con nection with the drum, said supportingA fitting having anaperture through the saine and an air nozzle adapted to project a jet ofair into said nozzle to entrain air into said drum and produce apressure therein, a conduit extend ing through said supporting ntting,and means for rotatably securing said conduit to said fitting. 9. In adispensing device, the combination of a metal fitting having meansforeiecting a fluid tight connection with a container, a bore eintending through said fitting, a supporting tube rotatably mounted insaid bore, a conduit carried by the end of said tube and adapted to beimmersed in liquid in said container, said itting having an apertureproviding communication bei tween the interior and exterior of saidcontai'ner, a nozzle carried by said fitting and adaptI ed to project ajet of air under'pressure into said aperture to entrain air into saidoontainerand produce pressure in said drum, and an auxiliary conduit'communicating with the upper end of said tube and adapted to be usedfor directing the :dow oi liquid to a predetermined point.

lo. In a liquid transfer apparatus, the correbination or a rnetal bodyhaving a conduit eir-I tending through the saine, means carried by saidbody for effecting a uid tight connection with a drum or othercontainer, said body having a transverse aperture, and said body havinga lat1 orally projecting lug in spaced relation to said aperture, saidlug having a bore and a counterbore in substantial registry with saidaperture, a nozzle having its body in said bore and having a securingflange in said counterbore, said nozzle being adapted to project a jetof air under pressure into said aperture to entrain air into saidcontainer and produce pressure in said container to discharge liquidthrough said conduit, and threaded means engaging said attaching ange onsaid nozzle and securing said nozzle in said bore.

` ERNEST W.' DAVIS.

ist

